| 6475395 |
Liquid treatment process with in-plant pressure monitoring of submerged diffusers |
Frank L. Schmit, David T. Redmon |
2002-11-05 |
| 6200468 |
Aeration system apparatus with source of in situ cleaning agent and pressure monitoring connection for submerged diffuser |
Frank L. Schmit, David T. Redmon |
2001-03-13 |
| 5328601 |
Apparatus for in place gas cleaning of diffusion elements |
Frank Schmidt, David T. Redmon |
1994-07-12 |
| RE33177 |
In place gas cleaning of diffusion elements |
Frank L. Schmit, David T. Redmon |
1990-03-06 |
| 4889620 |
In place gas cleaning of diffusion elements |
Frank L. Schmit, David T. Redmon |
1989-12-26 |
| 4288394 |
Sewage aeration system |
David T. Redmon, Paul M. Thayer, Frank L. Schmit, William H. Roche |
1981-09-08 |
| 4288395 |
Diffusion element with boundary zone treatment |
David T. Redmon, William H. Roche |
1981-09-08 |
| 4261932 |
Diffusion element with boundary zone treatment |
David T. Redmon, William H. Roche |
1981-04-14 |
| 4261933 |
Diffusion element |
David T. Redmon |
1981-04-14 |
| 4198299 |
Microscreen method and apparatus |
Michael J. Bykowski |
1980-04-15 |